A profit at the wine counter but still cheap price (7)
I believe the answer is:
bargain
'still cheap price' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'a profit at the wine counter' is the wordplay.
'a profit' becomes 'gain' ('gain' can be a synonym of 'profit').
'at' says to put letters next to each other (I've seen this in other clues).
'the wine counter' becomes 'bar' (I can't justify this - if you can you should believe this answer much more).
'gain' put after 'bar' is 'BARGAIN'.
'but' acts as a link.
Can you help me to learn more?
(Other definitions for bargain that I've seen before include "Agreement; cheap item" , "Deal; item at low price" , "Negotiate terms" , "Good-value purchase" , "Cheap offer" .)